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Javascript Articles
Page 175 of 534
How to share code between Node.js and the browser?
Sharing code between the backend and front end of a full-stack application can be a challenging task. However, it's essential for building maintainable and scalable applications. By sharing code, we can avoid code duplication, reduce development time, and maintain consistency across our applications. In this tutorial, we'll explore different techniques for sharing code between Node.js and the browser and learn how to choose the best approach for our project. Techniques for Sharing Code Between Node.js and the Browser Users can follow the approaches below to share code between node.js and the browser − CommonJS Modules CommonJS modules are ...
Read MoreHow to check whether image is loaded or not?
Overview To check for an image whether it is loaded or not in order to perform some actions can be done by using JavaScript. In many cases our browser fails to load the image due to large size of image, or poor network connectivity. So our image may sometimes show some errors. So to know whether our image is loaded or not we have certain methods such as onload(), onerror() and complete property. Syntax The syntax to solve the problem are − onload="function()" − This function is called when the image is loaded successfully. In this any callback function ...
Read MoreHow to check if CSS property is supported in browser using JavaScript?
Overview In today's world there are various browsers available on the system. So sometimes there are certain Cascading Style Sheets (C.S.S.) property that does not run on that browser. So to check which CSS properties are supported for that specific browser, JavaScript has the in-built method CSS.supports(), which checks whether that specific property is supported by the browser or not. The supports() method is supported by all the browsers: Opera, Edge, Chrome, and Firefox. Syntax The CSS.supports() method takes a key-value pair as input, which is in String format. The basic syntax used is − CSS.supports(“propertyName:value”); supports() − ...
Read MoreHow to trigger the setInterval loop immediately using JavaScript?
The setInteral() method allows us to continuously trigger a callback function after every particular time period. We can pass the callback function as the first parameter to trigger after every time period, and the time period in the milliseconds as a second parameter. The setInterval() method invokes the callback function after a particular number of milliseconds for the first time. Now, the problem is we need to invoke the callback function instantly for the first time at 0 milliseconds, and after that, we need to invoke it continuously in the given time period. Example In the example below, we created ...
Read MoreHow to trigger the onchange event on input type=range while dragging in Firefox?
The range input allows a selection of any value between the particular range of values. Using JavaScript, we can get the input value that users have entered in the range input. The onchage event triggers only when the user releases the mouse key. So, it will not update the value while dragging the range slider. You can face this problem in all browsers, such as chrome, safari, but not only in Firefox. Users can follow the example below to check whether the input value is updated while dragging the range input. Example 1 (Input values will not update while dragging ...
Read MoreHow to trigger the HTML button after hitting enter button in the textbox using JavaScript?
Generally, developers add the submit button to submit the input field's text. However, if they allow users to submit the input value by pressing enter, it improves the UX of the application. Here, we will learn the general way to detect the key press using the key listener event. Afterwards, we can perform any operation whenever the user presses the enter key button. Syntax Users can follow the syntax below to detect whenever the user presses the enter key. input.addEventListener("keypress", function (event) { if (event.keyCode == 13) { // enter pressed ...
Read MoreHow to splice an array without mutating the original Array?
In JavaScript, we can use the splice() method to splice an array. The splice() method inserts or deletes single or multiple elements from the array. We can pass the starting index as the first parameter of the splice() method, from which we can insert or delete the elements. It takes the number of elements to delete from the array as a second parameter and array values as the third parameter to insert into the array. This tutorial will teach us to splice an array without mutating the original array. Mutating the original array means making changes to the array. Whenever ...
Read MoreHow to Create Horizontal and Vertical Tabs using JavaScript?
We can create tabs using HTML, CSS & JavaScript. There can be two types of tabs. One is horizontal tabs, and another is vertical tabs. The tabs allow us to show different contents in very less space as we can show the different content according to the different tabs. We will learn to create horizontal and vertical tabs from scratch using HTML, CSS, and JavaScript. Create horizontal tabs We can show all tabs in a single row by creating horizontal tabs. Also, we can show the content of the selected tab below all tabs. Syntax Users can follow the syntax ...
Read MoreHow to create Hamburger Menu for mobile devices?
The hamburger menu icon has three vertical bars, which the navbar uses to expand and collapse the menu on mobile and tablet devices. This tutorial will teach us to create a hamburger menu from scratch. Here, we will use HTML, CSS, JavaScript, and Bootstrap to create a stylish hamburger menu with a navbar. Steps Users can follow the steps below to create a navbar with a hamburger menu icon. Step 1 − Create a div with a container class containing a navbar and an expandable menu. Step 2 − After that, create a div with a header class inside ...
Read MoreHow to use Regex to get the string between curly braces using JavaScript?
We can create a regular expression so it can find all the substrings between the curly braces. After that, we can use the exec() or match() method to extract the matching substring. In this tutorial, we will learn to use a regular expression to get the string between curly braces using JavaScript. For example, if we have given a string like ‘This is a {string} with {curly} braces, we need to extract all substrings that reside between the curly braces. Using the exec() method with a regular expression to get the string between curly braces The exec() ...
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